Using Campbell AVW2xx Vibrating Wire Interfaces – MultiLogger Application Note #21 – Page 10 of 13
Wired Configuration – AVW200 with Multiplexers (up to 2)
The following configuration depicts an AVW200 connected directly to the CR800 or CR1000, with gages
connected to multiplexers controlled by the AVW200.
Note: You will need to configure the AVW2xx for which type of multiplexer is connected. See the
introductory section for information on using Campbells Device Configuration software to do this.
Each multiplexer would be configured separately in MultiLogger. When configuring the multiplexers use
the Multiplexer Model AVW2xx. Configure the Channels to match the multiplexer configuration. Up to 16
vibrating wire gages with temperature can be read, or 32 channels without temperature.
Use the following Gage Type | Make | Model selections for the Multiplexer 1 Channel Configuration:
Vibrating Wire AVW2xx COM1 PB200 CH1 Digits PakBus ID 200 CH1 connected to Com1 Digits
COM2 PB200 CH1 Digits PakBus ID 200 CH1 connected to Com2 Digits
COM3 PB200 CH1 Digits PakBus ID 200 CH1 connected to Com3 Digits
COM4 PB200 CH1 Digits PakBus ID 200 CH1 connected to Com4 Digits
Use the following Gage Type | Make | Model selections for the Multiplexer 2 Channel Configuration:
Vibrating Wire AVW2xx COM1 PB200 CH2 Digits PakBus ID 200 CH2 connected to Com1 Digits
COM2 PB200 CH2 Digits PakBus ID 200 CH2 connected to Com2 Digits
COM3 PB200 CH2 Digits PakBus ID 200 CH2 connected to Com3 Digits
COM4 PB200 CH2 Digits PakBus ID 200 CH2 connected to Com4 Digits
Note: These gage types all use 12 volt excitation which should be appropriate for most gages.
Contact Canary Systems if you experience unexplained measurement instability.
To read the Upper Channel (Temperature Device):
Units
AVW200_YSI44005-°C YSI type 44005 on Channel 1 or 2 °C
AVW200_YSI44005-°F YSI type 44005 on Channel 1 or 2 °F
1V+
1V-
1T+
1T-
GND
2V+
2V-
2T+
2T-
GND
G
12V
vary by manufacturer.
RED
BARE
BLACK
WHITE
GREEN
VW#1
RED
BARE
BLACK
WHITE
GREEN
VW#1
COM2
(COM4)
COM3&4
CR1000
Only
COM Hi Odd
COM Lo Odd
COM Hi Even
COM Lo Even
Shield
ENABLE
CLOCK
COM Hi Odd
COM Lo Odd
COM Hi Even
COM Lo Even
Shield
ENABLE
CLOCK
C3 (RES)
C2 (CLK)
RED
BARE
BLACK
WHITE
GREEN
VW#nn
RED
BARE
BLACK
WHITE
GREEN
VW#nn
RS-232
connection use
CSI 178555
(example COM1
wiring below)
C1 (TD)
C2 (RD)
5
2
3
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